volume 40 issue 4 (december 2006) : 272 - 276
GENETIC VARIABILITY FOR FLORAL TRAITS INFLUENCING OUTCROSSING IN THE CMS LINES OF RICE
1Department of Plant Breeding and Genetics
Agricultural College and Research Institute, Madurai - 625 104, India
Published In
Indian Journal of Agricultural Research
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volume 40 issue 4 (december 2006) : 272 - 276
GENETIC VARIABILITY FOR FLORAL TRAITS INFLUENCING OUTCROSSING IN THE CMS LINES OF RICE
1Department of Plant Breeding and Genetics
Agricultural College and Research Institute, Madurai - 625 104, India
ABSTRACT
Ten CMS lines were evaluated with the objective of studying variability for twelve floral characters
influencing outcrossing. Among them, IR 68890A recorded significant mean values for eight
characters, viz., panicle length, stigma breadth, stigma area, pollen sterility, number of spikelets per panicle, spikelet fertility, percentage of panicle exsertion, and percentage of stigma exsertion.
Maximum GCV was recorded for number of spikelets per panicle followed by percentage of stigma
exsertion and stigma area. All characters exhibited high heritability except days to 50% flowering.
High heritability and genetic advance for panicle length, angle of floret opening, stigma breadth,
stigma area, pollen sterility, number of spikelets per panicle, style length and percentage of stigma
revealed the role of additive gene action.
influencing outcrossing. Among them, IR 68890A recorded significant mean values for eight
characters, viz., panicle length, stigma breadth, stigma area, pollen sterility, number of spikelets per panicle, spikelet fertility, percentage of panicle exsertion, and percentage of stigma exsertion.
Maximum GCV was recorded for number of spikelets per panicle followed by percentage of stigma
exsertion and stigma area. All characters exhibited high heritability except days to 50% flowering.
High heritability and genetic advance for panicle length, angle of floret opening, stigma breadth,
stigma area, pollen sterility, number of spikelets per panicle, style length and percentage of stigma
revealed the role of additive gene action.
KEYWORDS
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In this Article
APC
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Published In
Indian Journal of Agricultural Research